Do a search. I just did one on Google for "MLA2500 Linear" and got quite a
few.
I have my dad's MLA 2500. Haven't used it yet. What I heard is that you
NEVER draw grid current. The tubes are easy to kill and very $$$. There is
a site with directions how to modify it for other less $ tubes:

http://www.svetlana.com/docs/TechBul...hnoteNo14.html

I even corresponded with the W6KT who wrote it. Here's a reference:

Subject:

Dentron MLA2500 QST Article needed (QST May 96)

Date:

1 Apr 2001 03:18:30 GMT

From:

Dick Carroll

Organization:

hardly any

Newsgroups:

rec.radio.amateur.homebrew, rec.radio.swap

References:

1 , 2



Murray Neece wrote:



Hi Doug, go to......www.svetlana.com.....and they have the article in
thier

archives available right there....if you dont find it,let me know, Ill
email

you a copy....i think I "saved it"somewhere...73 murray



PS I have not done the mods to one yet because I keep finding good
tubes...and

im using an MLA now that will do 1800 really easy...I keep it at 1100 or
600

and figure it to last forever...73 Murray





The secret to keeping a MLA2500 alive and in good health is to make

sure your antenna stays in good condition and doesn't suddenly go

defective and unload the amp while it's on the air, and always monitor

the grid current while operating. Anytime you see grid current indicated

on the meter, STOP using the amp and investigate to see what went wrong.

Keeping the grids healthy is probably the most important single thing

you can do to keep the tubes in good shape. Those fragile grids won't

stand but a very few watts dissipation. Any visibile grid current while

operating on the air is too much, whatever the book says. When loaded

right (easily done) mine shows zero grid current at full output.

Mine 2500 still has the original tubes and they are still at full

output. I used it twice this week in a morning 75 meter group because of

rotten conditions. (I usually don't need an amp there.)



Dick WØEX.



"CLinT" wrote in message
...
I'm considering a Dentron MLA-2500B amp....
anyone here give me any reccomendations ... etc, what to look for?
Also ay good Dentron sites?

73,
Clint
note..AntiSpam software..remove it to reply...8)